The GRACO DB4311 is a stainless steel air-operated double diaphragm (AODD) pump with PTFE diaphragms, designed for reliable fluid transfer in demanding industrial environments. It is intended for use in applications requiring robust, corrosion-resistant pumping solutions.

Key Features:

• Air-Operated Double Diaphragm (AODD) Pump
• Husky 1590, 1.5-inch port size
• Stainless steel body with PTFE diaphragms
• Maximum free flow delivery: 100 gpm (378.5 lpm)
• Maximum fluid working pressure: 120 psi (8.4 bar, 0.84 MPa)
• Suitable for a wide range of industrial fluids, including corrosive and abrasive liquids
• Patented, high-reliability closed center air valve
• Online serviceable air valve
• Epoxy-coated air section for tough environmental conditions
• Self-priming, can handle solids up to 0.19 in (4.8 mm)
• Maximum suction lift: 20 ft (6.1 m) dry
• Maximum operating temperature: 150°F (65.5°C) (varies by diaphragm material)
• Sturdy, corrosion-resistant construction

Applications:
Industrial fluid transfer, chemical processing, wastewater treatment, mining, agriculture, and other applications requiring robust, reliable pumping of corrosive or abrasive fluids.

Installation Notes:

• Using genuine GRACO parts ensures optimal performance, reliability, and safety. Non-genuine parts may compromise pump integrity and void warranties.
• Ensure proper alignment and secure mounting of the pump
• Use appropriate piping and fittings rated for the intended pressure and fluid
• Follow all safety instructions and local regulations
• Regularly inspect diaphragms, valves, and seals for wear and replace as needed
• Refer to the manual for specific installation and maintenance procedures